JP3046184U - Non-flammable flexible pipe fittings - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a flexible pipe joint which is fire-resistant and facilitates connection work. A plurality of slits (19a, 19b) extending in the axial direction are provided at ends of joints (17a, 17b), and abutments (20a, 20b) protruding inward are provided. The ends of the joints (17a, 17b) are provided. Abutment parts 20a, 20
b, a cladding tube 21a made of an elastic material and having a U-shaped cross section,
21b is fitted and covered, and elastic packings 22a and 22b are attached to the abutting portions 20a and 20b so that the ends of the drain port 12, the water distribution pipe 14 and the like are brought into close contact with each other.

Description

[Detailed description of the invention]

[0001]

TECHNICAL FIELD OF THE INVENTION

 The present invention relates to a non-combustible flexible pipe joint, and more particularly to a non-combustible flexible pipe joint for connecting a toilet, a sink, a drain port of a washroom, and the like of a fire-resistant building.

[0002]

[Problems to be solved by conventional techniques and devices]

 Flexible pipe joints are often used for pipes and pipes or pipes and toilets, sinks, drains in washrooms, and connections to drain pipes, etc., to allow sewage to flow.

[0005] Synthetic resins such as plastics are usually used for the flexible fittings. However, in recent buildings with fire-resistant structures, the use of nonflammable flexible fittings may be required.

As such a nonflammable flexible pipe joint, a metal pipe joint described in Japanese Utility Model Publication No. 8-3822 (registered utility model No. 2139271) has been used. Since this non-combustible flexible pipe joint is such that an adhesive is attached between the inner surface of the pipe body and the cladding pipe, it is suitable for adhesion between the pipe body and the cladding pipe and between the cladding pipe and the water distribution pipe. The production of noncombustible flexible pipe joints is not only time-consuming, but also makes connection work extremely difficult.

[0005] Therefore, an object of the present invention is to provide a non-combustible flexible pipe joint which is excellent in fire resistance and easy in manufacturability and connection workability in order to solve the above problems.

[0006]

[Means for Solving the Problems]

 The present invention relates to a non-combustible flexible pipe joint for connecting a drainage pipe, a water distribution pipe, and the like to a metal pipe provided with joints on both sides of a bellows-shaped flexible pipe provided at an intermediate portion. The part is provided with a plurality of slits extending in the axial direction, and abutting parts are provided that protrude inward in the vicinity of the bellows-shaped flexible tube, and are elastic from the end of each joint to the abutting part. A non-combustible flexible pipe joint characterized by fitting and covering a U-shaped cross-section cladding tube made of a material and attaching elastic packing for tightly attaching the ends of a drain port, water distribution pipe, etc. To provide.

Another object of the present invention is to provide a non-combustible flexible pipe joint characterized in that the abutting portion is constituted by both ends of a bellows-shaped flexible pipe section.

[0008]

【Example】

 Hereinafter, a description will be given of a case where one embodiment of the non-combustible flexible pipe joint of the present invention is applied to a toilet bowl with reference to the accompanying drawings. The toilet bowl 10 is placed in a small room A surrounded by walls 11 and the like as shown in FIG. 4, and is used for defecation and urination. The drain port 12 of the toilet 10 is connected to a water distribution pipe 14 embedded in the wall 11 via a non-combustible flexible pipe joint 13 to collectively remove waste such as defecation.

As shown in FIG. 1, the non-combustible flexible pipe joint 13 is constituted by a metal pipe body 15, a bellows-shaped flexible pipe section 16 is provided at an intermediate portion thereof, and both sides thereof have a cylindrical pipe. Joint portions 17a and 17b are provided. The joints 17a and 17b are provided with expanded portions 18a and 18b which are expanded outward at about 30 degrees at both ends, so that the joints 17a and 17b are easily connected to the drain port 12 and the like.

A plurality of slits 19a, 19b extending in the axial direction in block units are provided at ends of the joints 17a, 17b with an appropriate gap in the circumferential direction, and a bellows-shaped flexible pipe portion is provided. Abutment portions 20a and 20b protruding inward in the vicinity of 16 are provided.

The joints 17a, 17b are fitted with covering tubes 21a, 21b which cover the slits 19a, 19b and extend to the abutment portions 20a, 20b and have an elastic U-shaped cross section. The operator is not injured when performing the operation.

Packings 22a, 22b made of elastic, slightly thick rubber, synthetic resin or the like are mounted on the outer surfaces of the abutting portions 20a, 20b of the joints 17a, 17b. The ends are held in close contact.

Reference numerals 23a and 23b denote tightening belts attached to the outer peripheral portions of the joints 17a and 17b for tightly tightening the joints 17a and 17b and the water distribution pipe 14.

In order to connect the non-combustible flexible pipe joint 13 thus configured to the drain port 12 and the drain pipe 14 of the toilet 10 in a bent relationship, the joint portions 17a and 17b of the non-combustible flexible pipe joint 13 are connected to drain ports. 12 and the drain 13.

Next, the flexible pipe section 16 is deformed and inserted into the drain port 12 and the drain pipe 14 inside the joint sections 17a and 17b, and the ends thereof are brought into close contact with the packings 22a and 22b. When the insertion and contact work is completed, the belts 23a and 23b on the outer periphery of the joints 17a and 17b are tightened to complete the connection between the joints 17a and 17b, the drain port 12, and the water distribution pipe 14.

The incombustible flexible pipe joint 13 can be applied to a noncombustible fire-resistant building because the flexible pipe section 16, the joint sections 17a and 17b, etc. are made of metal.

The abutting portions 20a and 20b of the joint portions 17a and 17b of the non-combustible flexible pipe joint 13 are provided with elastic coating tubes 21a and 21b having a U-shaped cross section, and a packing made of rubber, synthetic resin, or the like having a relatively large thickness. Since the outlets 22a and 22b are mounted, the drain port 12 and the end of the water distribution pipe 14 are held in close contact, so that sewage does not leak.

The end of the incombustible flexible pipe joint 13 is expanded, and a plurality of slits are provided in this portion, so that the outlet 12 and the drain pipe 14 of the toilet 10 have a slightly smaller pipe diameter, position, and size. Even different ones can be easily connected.

In the present embodiment, a plurality of slits 19a, 19b extending in the axial direction are provided at the ends of the joints 17a, 17b in block units, but the plurality of slits 19a, 19b are formed in the circumferential direction. It may be arranged with an appropriate gap.

Although the abutment portions 20a and 20b are provided on the inner surfaces of the inner portions of the joint portions 17a and 17b, the ends 16a and 16b of the flexible pipe portion 16 may be used as shown in FIG. In this way, the production of the nonflammable flexible pipe joint 13 is facilitated and the appearance can be improved.

[0020]

[Effect of the invention]

 The present invention relates to a non-flammable flexible pipe joint for connecting a metal pipe having joints on both sides of a bellows-shaped flexible pipe provided at an intermediate portion to a drain port, a water distribution pipe, and the like. The joint is provided with a plurality of slits extending in the axial direction, and abutting portions protruding inward in the vicinity of the bellows-shaped flexible pipe portion. Each joint is made of an elastic material from its end to the abutting portion. Fits and covers a cladding tube with a U-shaped cross section, and has elastic packing that makes the ends of drainage pipes, water distribution pipes, etc. tightly attached to the abutment, so that it is fire resistant and has no leakage of sewage, etc. Things.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a noncombustible flexible pipe joint of the present invention.

FIG. 2 is an enlarged sectional view showing a main part when the nonflammable flexible pipe joint of the present invention is connected to a water distribution pipe or the like.

FIG. 3 is a partially cutaway front view of another embodiment of the noncombustible flexible pipe joint according to the present invention.

FIG. 4 is an explanatory view showing a usage example of the flexible pipe joint of FIG. 1;

[Explanation of symbols]

 Reference Signs List 10 toilet 11 wall 12 drain 13 non-flammable flexible pipe joint 14 water pipe 15 pipe 16 flexible pipe section 17a, 17b joint section 18a, 18b expansion section 19a, 19b slit 20a, 20b abutment section 21a, 21b covering pipe 22a , 22b Packing 23a, 23b Tightening belt

Claims (2)

[Utility model registration claims] An incombustible flexible pipe joint for connecting a metal pipe provided with joints on both sides of a bellows-shaped flexible pipe provided at an intermediate portion to a drain port, a water distribution pipe, and the like. At the end, a plurality of slits extending in the axial direction are provided, and abutting portions protruding inward near the bellows-like flexible pipe portion are provided.Each joint portion is made of an elastic material from the end to the abutting portion. A non-flammable flexible pipe joint characterized by being fitted with a U-shaped cross-section coating tube and fitted with an elastic packing at its abutting portion to tightly contact an end of a drain port, a water distribution pipe or the like. 2. The non-combustible flexible pipe joint according to claim 1, wherein the abutting portion is formed by both ends of a bellows-shaped flexible pipe section.